The death of Joanna Ramos, the young girl who died on Friday hours following an after-school fight, has been ruled a homicide by the Los Angeles County coroner's office. Coroner's Lt. Fred Corral on Monday told The Associated Press that the girl, who was reportedly 10 or 11 years old, died of blunt force trauma.

Police said that Ramos took part in a planned fight with a fellow fifth grader in an alley near their elementary school on Friday. Friends have told the media that the two girls were fighting over a boy.

They were fighting over a boy, Stephanie Guadalupe Soltero, who said she was friends with the victim, told the Press-Telegraph. I told the teacher and, she said she would talk to all the girls on Monday (today).

Deputy Police Chief Robert Luna told the Press-Telegraph that no weapons were used in the fight. He also said that none of the girl were knocked to the ground and that they both walked away from the fight, which lasted approximately a minute.

Ramos' older sister Vanessa Urbina, 17, told The AP that Joanna Ramos died after she underwent emergency surgery for a blood clot on the brain. Joanna Ramos was pronounced dead at 9 p.m. on Friday. She died approximately six hours after she and an 11-year-old student allegedly engaged in the fight.

Patricia Catalan, Ramos' aunt, told the media that her niece had no visible signs of trauma and had returned to an after-school program where she vomited and went home. Ramos later told her family she was not feeling well and was taken to the emergency room where she had surgery and was listed in critical condition, according to reports.

A friend's mother told The AP that the fifth grader went back to her after-school program with blood on her knuckles from wiping a bloody nose.

Police have since questioned the other student involved in the fight. Authorities also said there were seven children who witnessed it. No arrests have been made at this time.